Bowling pin setting machine control mechanism



Aug. 21, 1945. R. RUNDIQL' BOWLING PIN SETTING MACHINE CONTRL MECHANISM11 Sheets-Sheet' 1 Filed June 2B. 1941 Am@ QSN 3 .n

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I TTORNEY Aug. 2l, 1945. v R. E. RUNDELL 2,383,017-

BYOWLING PIN- SETTING MACHINE CONTROL' MECHANISM Filed June 28BOINVENTOR L E. DI Nv U R., E. T R E P U R ATTO RN EY v Aug. 21,1945. R.E. RUNDELL BOWLING P`IN SETTING MACHINE CONTROL MECHANISM Filed June 28,1941 11 Sheets-Sheet 4 D VL W E R N R .E

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Aug. 2l, 1945. R. E. RUNDELL BOWLING PIN SETTING MACHINE CONTROLMECHANISM Filed June 28, 1941 11 Sheets-Sheet 5 INVENTOR RUPERT e RUNELL BW ATTORNEY Aug. 2l, 1945. R. E. RUNDELL BOWLING PIN SETTING MACHINECONTROL MECHANISM Filed June 28, 1941 11 sheets-sheet 'ln INVENTOR Aug.21, 1945. R. E. RUNDELI.

BOWLING PIN SETTING MACHINE CONTROL MECHANISM Filed June 28, 1941 11Sheets-Sheet 9 krumm A; TORNEY INVENTOR RUPERT E RUNDELL BY lAug. 21,1945. R. E. RUNDl-:LL

BOWLING PIN SETTING MACHINE CONTROL MECHANISM Filed June 28, 1941 11sheets-shet 1o INVENTOR RUPERT E. RUNDELL.

ATTORNEY Aug. 2l, 1945. R. E. RUNDELL 2,383,017

BOWLING PIN SETTING MACHINE CONTROL MECHANISM Filed June as, 1941 11sheets-sheet 11 FIGAZ nu ERT E RUN ELL BW@ "Y A roRNEy Patented Aug. 21,1945 l UNlTED STATES PATENT yol=l--lcla BOWLING rlN sgi'lsrisngmcoN'rnoL Rupert E. Runden, Rockville cepu-e.V N. Y., w signor toAmerican Machine and Foundry Colne pany,4 a corporation of New JerseyApplication Jupe 2s, 1941, serial No. 400,164

` 3s claims. (c1. 273-43) ing of a ball, and respotting pins whichremain standing after the removal of deadwood" so that the play of thegame can be continued in rapid order. v

'Ihis invention also relates to automatic bowling pin setting machines-and more particularly i game. l

to improvements in control devices suitable for operating such machinesin order to automatically effect various changes in its operationdepending upon the several possibilities with respect to the 'number ofpins knocked down by one or more` balls. That is, it a strike is madethe machinefatomatically registers the eiect andI more pins 're fed froma magazine to the alley, So also; A ispare is made, other controlmechanisms are 'f tomatically put' into operation which will registertheilect and caus? the machine to go through "a different set ofoperations than when a strike is made. Also if less than lten pins areknocked down by one or more balls, the machine will follow throughcertain cyclic' operations which are different from those arising when astrike or spare is made. v

Itis, therefore, an object of my invention to` provide improvedmechanism for automatically changing the sequence of operations of mymachine whenever a strike or spare is madeor less than ten pins areknocked'down by the number of balls allotted to a player for each frameof the game.' .l A

It isfa -furtl'lerl` object of my invention to provide Yialilftom'aticmechanism which will throwone set offcontrol devices into operation whena strike is made-and another into `opera-tion when a spare ismadfanddiiferentiate -between the two.

It isha lfurther object of myiinvention to provide and-automatic bowling`-pin setting machine in which a plurality of pins, usually ten, istransferred from a magazine into a pin setting dev-ice pins after thethrowing of a ball.

and placed-upon the bedof an alley in proper 1 playing arrangement,and'wherein after the a vertically -moving pinsettng device is providedprol with meansI which assistin determining the number of pins. felledby each ball thrown and yin the claims hereunto appended.

In the accompanying drawings which form a.l

wherein control mechanism is advanced for changing the sequence ofoperations of the maf. chine depending upon the number of pins knockeddown by the rst or second ball.y v

My invention also contemplates the provision of improved controlmechanism associated with suction bowling pin handling means in whichthe suction handling means cooperate to furnish a new set of pins to thebed of a bowling alley whenever the control mechanism indicates thatmore pins are needed to continue the'play of the It is a further lobjectof my invention to provide a pin setting device provided with pinhandling members, each of which has associated therewith means fordetermining whether or not pins are standing after the throwing of theil'rst ball of a frame so that when the device is moved towards an alleyafter a first ball is thrown and all pins are knocked down, selectivemeansfwill be operated to initiate the feed of another seti of pins tothe alley. y

It -is a further object of my invention to provide .an .automatic pinsetting machine wherein a vertically moving pin setting device isprovided with means which assist in determining the number of pinsfelled by each ball thrown and wherein control mechanism is renderedoperative to change the sequence oi' operations of the`machine dependingupon the number of pins knocked down by the first or second ball, andfurnish mechanism for apprising a bowler of the result of each ballthrown'.

A further object of my invention consists of the provision of mechanismfor testing for the presence or absence of pins standing on a bowlingalley bed after the throwing of each ball and control devices operatingin response to the result determined by the testing mechanism forcontrolling the operation of the machine and causing it to set a new setof pins or reset standing My invention further includes mechanism forvisibly apprising the bowler'ofthe eiect of each ball thrown.

With these and other objects not specificallyv mentioned in view, theinvention consists in certain combinations and constructions which willbe hereinafter fully described, and then set forth partici .thisspecification, and wherein the several reference characters designatethe same or like elements: l

Figure 1 is a sectional side elevation partly diagrammatic, showing apreferred embodiment 'of various lmechanisms for automatically operating'ticn inlet tc the pin setter table;

and controlling a bowling pin setting machine;

Figure 2 is a front elevation showing a part of the mechanism of Figure1:

Figure 3 is a partial side elevational view oi.' the control mechanismand the pin handling table;

Figure 4 is a side elevation partly in section, taken on line 4-4 ofFigure 5 showing a preferred form of control mechanism, the frame beingomitted for sake of clearness;

Figure 5 is an end elevation of Figure 4;

Figure 6 is a plan view of Figure 4;

Figure 7 is a sectional plan view on line 1-1 of Figure 4 showing thesuction valve control mechanism;

Figure 8 is a side sectional elevation of the mechanism of Figure 9showing in section taken along line 8-8' construction of the indexlocking mechanism andits connectiontc the pin setter table:

Figure 8a isa sectional view of a detail taken on line Ba-ta of Figure8;

Figure 9 is a plan view of Figure 8;

Figure 10 is a rear view of the control mechanism shown in Figure 8:

Figure 11 is a front view of the indexing mechanism, partly in sectionshowing the connections between the pin setter table and the indexingdevice;

Figure 12 is an enlarged view, partly in section, of parts shown inFigure 10;

Figure 13 is a side elevation of Figure 12;

Figure 14 is a plan view of the pin setter table showing suctionconnections to the spotter and re-spotter funnels;

Figure 15 is a sectional elevation on line i5-i5 l of Figure 14;

of Figure 14;

Figure 17 is a sectional view showingthe suc- Figure 18 is a sectionalview on `line iB-IB of Figure 17;

Figure 19 is a sectional view on line I9--i8 of Figure 17;

Figure 20-is a sectional view showing a respotter unit resting on thebottom shelf of the table, the suction turned on bringing Vthe valvestem down to hold the re-spotter secure while the table is rotated 180;

Figure 31 is a plan view of the cams for indexing the pin setter table:

Figure 32 is a sectional elevation on line 32-32 of Figure 31;

Figure 33 is a side elevation of Figure 31;

Figure 34 is a diagram showing circuits from the respotter switches onthe pin setter table;

Figure 35 is a front elevation of Figure 34 with part of the wiresomitted for clarity;

Figure 36 is a sectional elevation on line 30-38 of Figure 34;

Figure 21 is a sectional view showing the same respotter when raised bythe pin and sealed against the top plate of the table and the valvepistcn rc1-ced up sc as tc lead suction ini-.c the valve to hold the pinand funnel secure to the table;

Figure 22 is a partial sectional view showing the suction valve in aneutral position;

Figure 23 is a top view of the switches shown in Figure 21 with thecover removed;

Figure 24 is a sectional view on line 24-24 of Figure 20;

Figure 25 is a development of suction cams for the respotter umts:

Figure 26 is a development of the suction control cams for the pinhandling units on the table;

Figure 27 is a development of cams for indexing the pin setter table:

Figure 28 is a development of cams for strike control circuit breakerand spare control mech- Figure 37 is a fragment of Figure 36 drawn to alarger scale;

Figure 38 is a plan view of Figure 37;

Figure 39 is'a Vwiring diagram showing the wiring from the pin settertable to the control mechanism;

Figure 40 is a diagram showing the progressive operations after thefirst ball has knocked down all ten pins. resulting in a strike;

Figure 41 is a diagram showing the progressive operations after thefirst ball has failed to knock down all ten pins, not a strike;

Figure 42 is a diagram showing the progressive operations after thesecond ball has knocked down all the pins left standing by the flrstball, resulting in a spare; and

Figure 43 is a diagram showing the progressive operations after thesecond ball has failed to knock down all the pins left standing by thefirst ball, not a spare.

Referring to the drawings, in Figures l, 2 and 3, I have shownapreferred form of my invention relating to an automatic pin 'settingmachine wherein are provided side frame uprights la, Ib, 2a and 2bconnected by cross frame members 3 and 4 and longitudinal members 28.Supported on cross frame 4 is a bracket 5 in which one end of a shaft 8is journalled: the other end is mounted in a, bearing in side frame Ib(Figures 1 and 2), and carried by the shaft is a cam l. Shaft 6 isrotated by means of shaft 49 through sprocket 9 fastened to shaft 43 bymeans of a sprocket chain I0 tracking sprocket Il journalled on shafti2, Through sprocket Il, which is attached to sprocket ii and alsoiournalled on shaft i2, the drive is transferred by sprocket chain I4 tosprocket i5 mounted upon shaft 8 to rotate cam 1. Bowling pins, whichare to be set upon the alley bed, are transferred from a magazine M bymeans of mechanism which may take the form of that shown in my copendingapplication, Serial No. 260,901, flied March 10, 1939. The pins are.placed in predetermined arrangement in the table T, which is raised,lowered and inverted relative to the alley bed. In order to accomplishthe desired movement of the table T. a gear segment i6, loosely mountedon shaft I2 and oscillated by means of a cam follower i1 mounted on thesegment and engaging cam 1 causes the segment to rotate pinion i8 fixedto shaft I9 supported in arm 29 of bracket 6. Also fixed to shaft il isa sprocket 2i about which is trained sprocket chain 22 tracking asprocket 23 fixed -to shaft 24 mounted in brackets 25 supported by theside frames 2a and 2b 4of the machine.

` In thisl manner the table T is raised and lowered at the proper timesto set andl reset pins thereon, that is, when a new set of pins is to beplaced upon the alley, the table is lowered from pin receiving positionto pin delivering position upon the alley bed, and then raised above thebed. After throwing a ball the table is lowered adiacent the bed to testfor the presence or absence of pins. If all pins are knocked down, thetable is raised to receive a new set of pins, as mentioned before, butif pins Vremain standing after the throwing of the first ball thestanding pins are lifted, the alley is swept and the pins reset in amanner described hereinafter. After throwing the second ball, by meansdescribed hereinafter, the table is lowered and the presence or absenceof standing pins determined, but if pins are standing they are notlifted but are swept from the alley into the pit.

Mounted on shaft 24 is a pulley 28 about which is trained cable 21suitably connected at 28 to slide member 31, vertically slidable inguides 8 on side frame member 2a and provided at its lower end with abracket 38 and a clamp nut 38a which secures hollow-l shaft 39 of tableT in the slide bracket 38 for vertical movement. The furtherconstruction and operation of table T will be described hereinafter.Also assisting in the vertical movement of the table T is a cable 29which is trained over pulley 30 supported by shaft 3| journalled inbracket 32 mounted on cross frame 3. Cable 29 extends over a similarpulley 35 mounted on shaft 33 supported by bracket 34 mounted on framemember 4. A counterweight 38 acts to balance the table.A While I haveonly described the mountings of single cables, it will be apparent fromFigure 2 that these cables may be provided on both sides of the machine.

As shown in Figures 1, 2, 3 and 14 to 16, inclusive, the table Tcomprises a plurality of pin setter elements S mounted on one side and aplurality of respotting units U mounted on the other side. Thearrangement of the Setters S and respotting units U conforms to theusual playing positions of pins on the alley bed, but may be varied inany other manner if desired.

Pins P, which areto be transferred and set upon the bed of a bowlingalley, are fed from the pit of the alley by suitable mechanism (notshown), which may include spiral members 49 forming a part of a magazineindicated generally M wherein a plurality of pins,`usually ten or more,is arranged in alignment for the removal therefrom of thedesired numberat a predetermined time by means of grippers 4| which are mounted upon avertically and horizontally movable conveyor device designated 42 whichconsists of a plurality of longitudinal bars 43 secured to transversesupports 44. On bars 43 are slidably mounted carriages 45 which in thepreferred embodiment are provided with independent gripping fingers 4Iwhich engage and grip the required number of 11p-ended pins in magazineM for transfer to pin Setters S (Figure 1).

The raising, and lowering of the table T and operation of the pintransfer mechanism 42 is accomplished by means f a motor 41 mounted uponframe la, Ib of the machine at 48. A stud shaft 49 is driven by means ofthe sprocket 50 from the motor shaft through a sprocket 52 mountedthereon and a chain 52a. The drive is transferred from shaft 49 to shaft6 by means of sprocket chain l0 in the manner described hereinafter. Inlike manner, shaft "53 on which is mounted cam 54 which causes theraising and lowering of pin transfer 42, is driven by means of sprocket55 mounted on shaft 49 through sprocket chain 58 tracking a sprocket 51on shaft 53. Cam 54 is provided with a high and a low portion, andwhenever the low portion is engaged by cam follower 58 on lever 59, thetransfer 42 will be either in pin receiving position over the magazine Mor in pin delivering position over Setters S. Lever 59`is provided withan arm 50 to which is attached a link 6l connected at 62 to lever 68provided with an arm 84 pivotally connected to bar 44 forming a crossmember of the frame of transfer 42.

The carriages 45 are moved longitudinally along bars 43 by means ofpinions (not shown) mounted on shaft 89 journalled' in arm 88 which alsoforms a part of lever 59 mounted on shaft 69. On shaft 69 is provided asprocket 19 over which tracks a sprocket chain 1| engaging the sprocket12 on shaft 81 by means of a pinion (not shown) on shaft 89` engaging asuitable driving means, such as a gear segment (not shown) of the typedescribed and disclosed in the above referred to copending application.In this manner the bowling pins are lifted from spirals 40 by grippers4|, moved clear thereof, transferred longitudinally and located inproper arrangement in pin setters S where they are held while thecarriages 45 with the grippers 4| move back to obtain a new set of pms.

After the carriages 45 have delivered the pins from the magazine to vtheSetters S, the pins, gripped firmly therein by suitable means such asmechanical grippers or holders operated bysuction, provided in the tablefrom a suitable source of supply through a conduit 13 and valves V1 andVa, hereinafter described more in detail, are transferred to the alleyA. Conduit 14 connects valve V1 (Figures 4, 5 and 6) through a flexibleconduit 16 to a hollow plug 18 fixed in hollow shaft 39 (Figure 17)', sothat suction created in conduits 14, 18 can be transmitted through atwoway element 80, which supports one end of a hollow shaft 8|, throughtwo-way elements 82 fastened to the other end of member 8| and providedwith an opening connecting a hollow plug 84 with a flexible conduit 85.Conduit 85 conducts suction to ducts 81 which are connected to each ofthe pin setter units S. Since plug 84 is adapted `to rotate relative tofixed hollow shaft 39, a circumferential suction passage 83 is formed inelement 82, shaft 39 and sleeves 83a which surround shaft 39. In thismannerit is possible to create the desired fluid pressure, and maintainit regardlessl of the rotation of table 'I'.

In order to operate the resetting or respotting members U, there isprovided a flexible conduit 11 which connects with conduit 15. Flexibleconduit 11 connects to a hollow plug member 19 fast in shaft`39, andsuction is inducted into the hollow shaft therefrom through acircumferential passage 88 similar to 83 into the bore of plug 89 aboutwhich is seated flexible conduit 90 which through ducts 9| supplies theseveralrespotting units U with fluid pressure Whenever pins are to belifted and respotted.

Table or elevator T may consist of a frame F provided with a centralbarrel or hub 92 mounted upon sleeves 83a for rotation about andrelative to stationary shaft 39. Barrel 92 is held in proper positionupon shaft 39 against lateral movement thereon by means of a collar 93positioned about shaft 39 and locked in adjusted relationship thereto bymeans of a set screw 94. Referring to Figures 14, 15, 16 and 18, it willbe seen-that frame F supports the several Setters S in usualsubstantially triangular pin formation, although any other desiredarrangement may be used SE1-, ters S` are rigidly mounted upon pipes81which are clamped to the frame F by' means of clamps fastened to frameF.

Pin, Setters S corresponding to bowling pins, numbers I, (I), 5, (V), 1,(VII), and I0, (X), in

the form shown, are provided with elbows 01a connecting them to thesystem of pipes l, while the remaining setters are mounted upon thepipes 01 by means of T units l'lb. Attention is called to Figures and16, which illustrate this method of mounting the setters S. Inasmuch assuction is inducted into the system 01, by means of conduit 05, it willbe uniformly distributed through the several pin setters as desired.A'll'he table T also comprises an upper plate 00 and a lower plate 0lprovided with a number of openings |0| therein corresponding to thenumber of pin respotting units. These -two plates are connected by meansof spacers 00 which by means of suitable nuts' 00 hold them rigidlyseparated one from another. Upper plate 00 is secured to frame F bymeans of brace |00 extending downwardly from the frame F. Slidablymounted upon lower plate 01 and substantially concentric with each ofthe openings |0| therein, are the bowling pin respotting units U, whichare substantially the same as those.

shown and described in the above referred to application. In order toprevent excessive lateral movement of the respotters U on `theirsupport, circular depending flanges |02 are mounted on the under surfaceof plate 00. Due to the shiftable or floating" mounting of therespotters U on table T, it is always possible to register the presenceof a pin whether it be on or off spot. 'I'he electrical connectionsnecessary for this purpose are described hereinafter. In order tocontrol the operation of the bowling pin setters, in-4 sofar as theapplication of suction is concerned, when it is desired to lift pinsfrom the alley for respotting, brackets |03 are employed, which supportsuction conduits |04 to which suction is conducted by means of pipe 0idescribed previously.

In order -to control the suction in the pin setters S and respottingunits U, there has been provided a housing |00 which has lugs |00through which project screws. |01 fastening the housing to machine frame2a (see Figures 3 to 7, inclusive). Also secured to frame 2a by means ofscrews |00 is a bracket 0 having a bearing in which is journalled ashaft ||2. Secured to one end of shaft ||2 is a crank arm ||3 while atthe other end is xed a lever ||4 provided with a cam follower ||5. Crank||3 is connected to a link H0. v

Also forming a part of housing |05 is an arm |05a provided with ajournal |05b (Figure 6). A shaft is journalled in journal |00a ofprojection |00 formed on housing |00 and in the journal |05b. Mounted onshaft is a sprocket ||0 which through sprocket chain l I0 drives theshaft in the direction indicated in Figure 4. Levers |2| and |2 la areJournalled on shaft |22 mounted in housing |05 and bracket |23 securedto housing |05 by screws |24. Shaft |22 is fixed in housing |05 by a setscrew |20. Levers |2| and |2|a are provided with portions |21 arrangedto engage with adjustably mounted set screws mounted in housing |05 andthereby control the downward movement of the levers.

The suction control mechanism may consist of a double valve device,designated generally D (Figures 1, 4, 5 and 6) having a bracket portion|20 mounted upon housing |00 by means of screws |30. Two valves Vi andV: are provided, for reasons described hereinafter, and since theconstruction isidentical it will sufficev to describe one in detail.Valves V1 and Va are arranged side by side and in the illustratedembodiment are formed in a single unit. slidably mounted in each of thevalves is a piston member |3|, having a slotted lower end and a pin |32resting on the end of lever I2 Piston member |3| is provided with areduced portion |33 approximately midway of its length, and at its freeend has a substantially L-shaped bore |34. The piston is slidablymovable in bore |35 formed in each valve device. A spring |30 bearsagainst and tends to urge each piston |3| into suction cut off positionin which the reduced portion |33 lies out of alignment with bore |39 sothat L- shaped bore |34 bleeds through opening |30, and pipe 'l4, andthe tail 21 of lever |2| rests against set screw |20 thus preventingexcess downward movement of lever |2|. In this position (see Figure 4)all suction through conduit 14 is cut off.

Cam follower I 20 on lever |2| is provided for tracking one or more camswhich are moved into cooperating position therewith as describedhereinafter. In this manner lever |2| is raised against the compressionof spring |30, reduced piston portion |33 is aligned with bore |30 andpipe 14, suction flows from conduit 13 to pipe 14, and thereby enterseither the pin setter or the pin respotting system,and either one of theother, respectively, is made active for gripping and handling pins, aspointed out above. As stated, valves V1 and V2. are identical inconstruction and operation although they are operated in different timedrelation, as will be made evident hereinafter. A single source ofsuction 'I3 feeds both valves. A bore |3|a connects valve V1 and asimilar bore |3|b connects valve Vn with the source of suction.

The operation of valves V1 and V: is controlled by a series of camsslidably mounted on and rotating with shaft ||1. As shown in Figures 4,5, 6 and '1, cams |4|, |42 and |43 coact with cam follower projection|20 on valve lever |2|, and cams |44, |45 and |40 cooperate withprojection |20a on valve lever |2|a to open and close these valves. Thecams may all be formed as an integral unit or connected together (asshown, secured to a disk |14, and mounted for sliding movement as a uniton shaft lil). Fixed to cam |44 is a hub |40 having a reduced portion|49 engaged by cam follower ||5 carried by lever ||4 so that wheneverthis lever is rocked, the cams will be shifted along shaft l i1.

Mounted on frame 2 are other elements of the control mechanism in whichthe several stationary .shafts thereof are fixedlin spaced frame members|50 andl |5| secured to the frame 2 and toeach otherat |53 (Figure 9).

The mechanism for indexing the pin setter table will now be described.Referring to Figure 12, it will be seen that a solenoid |00 mounted onframe |5| (Figure l0) i-s provided with an armature |6| connected to abell crank lever |62 pivotally mounted at |02a in a bracket |02b inwhich is also mounted shaft |55 to which lever |50 is attached. Lever|56 is provided with an arm |50a, and to the upper end of shaft |55 isattached an arm |56b. Arm |55b is pivotally connected to link H0 (Figure6). The free end of lever |02 is provided with a trigger or hammerportion |02c movable by operation of solenoid |00 into engagement withlatches |03 mounted about a turret |05. These latches cooperate inholding the pins |04 in inoperative position. From a reference toFigures l2 and 13, it will be seen that solenoid |00 has been energizedwhereupon armature |0| has moved lever |02 from its normally inoperativeposition, as shown in dotted lines in Figure l2, to its latch engaging.or 11,1 une PitiOn Where Impact arm or hammer |82c has engaged a latch|88; hence imder such conditions the latch is tripped, and the pin |84under its control is released. Turret |88 carries a plurality of pins|84 spaced ninety `degrees apart, as shown in Figure 13. Each of thepins is slidably mounted and normally spring urged into operativposition. `Each pin is also provided with a reduced portion I84aadapted'to'be en- ,gag'ed' by tail I83a of latch |88 for locking the.pin in inoperative position. As shown in detail in Figure l2, each pin|84 is slidably mounted in bores I85b formed in the turret |85, andencircling each pin is a spring I85a,y one end of which engages ashoulder I84b of pin head I84a while the other end of the spring bearsagainst a shoulder I85c of the bore |8511. i

The several latches are pivotally mounted .at |88 in grooves or slots|81 formed in the turret. vSprings |88 located in bores |89 formed inthe turret |85 urge latches |83 into latching position as the pin |84 ispushed in when the pin head |84a rides on cam |84c.

Turret |85, which is responsible for the operation of the strike controlmechanism of the machine, is loosely mounted on shaft |18, and haseither formed integrally therewith or suitably attached thereto `a gearI1| which is driven by gear |12 mounted on shaft |18, meshes with gearassaoiv' associated cams along shaft |I1. Arm Illa of lever-"|58 isprovided with a cam follower v|58 which rides in a groove |88 formed inmember |84 slidably mounted on shaft |85. Attached to or formedintegrally with member-'|84 are cams v |88, I81and |88 on one side ofgroove |88, while cams |88, |88 and |8I. 'the last of which is a blank,are located on the other side. Spring |84, which enclrcles shaft |85,bears against collar |82 fixed to shaft |85 and urges member |84 againstcollar |88 also pinnedto shaft |85.

When the lever |18 is moved by a selected pin |84, ltvcauses yoke I8| torock arm y|58 which controls the movement of theY strike and spare cams.Hence. if there is a full stroke of' lever |58 (from full-line todotted-line position, Figures y( i 4and 13), the movement of member |84along the shaft |85 will position cam |88 in the path' of a lever |85mounted on-shaft |88 for en gagement by the bumps |81 of cam |88 forindexing the pin setter tableT through one-half of arevolution. 3

When a bump |81 engages wlth'lever |85 it I swings-a lever |88, fast onshaft |88, provided |14 on shaft |15, and gear I14a, also on shaft |15,I

which are driven by gear |18 on shaft |11. Shaft |11 is driven fromsprocket 458 on the main drive shaft 49 through chain 45| to sprocket452 on` shaft |11. Pinion 453 on shaft |11 meshes with gears 454 onshaft |85 on` which are mounted the several cams (|88 to |8I, inclusive)which control the various operations as will be hereinafter described.

Referring to Figure 13, which shows the angular arrangement of th'e fourpins |84 used in the illustrated form of my'invention, itvwill be seenthat in its counter-clockwise movement, each pin, if and when it isreleased from latch |83, becomes operative approximately forty-fivedegrees from the vertical, at which time it engages cam surface |82 of alever |18, hereinafter described more in detail. It is also to be notedthat as the turret is rotated step by step through 90 each cycle of themachine during which time shafts 8 and, 53 make the desired number ofrevolutions,

each of the pins |84 will be moved past hammer or trigger head |82c andif the pin is not released by the striking impact of the hammer with itslocking latch |83 because the hammer I 82o is not operated to unlatch'it, the pin cannot project from the turret, as shown in Figure 12, andhence cannot engage cam portion |82, as above mentioned, and operate thestrike control mechanism.

Whenever turret |85 conveys any of the pins |84 past trigger |820, and aparticular pin is released from a particular latch, that pin `willoperate in the manner above described.` That is, when a pin |84 isunlatched, spring I85a, which abuts against shoulder |841), forces thepin to the right (Figure l2) and the strike control lmechanism will berendered operative.

Lever |18 is pivotally mounted on shaft |18 fixed in frame |5I. A collar|88 pinned to shaft |18`llmits the lever against lateral movement. Lever|18 in addition to the cam |82, substantially midway of its length, isalso provided with a yoke |8I at its free end` in which rides` a roller|51 carried on the end of lever |58. In this manner whenever lever |18is rocked about itsspivot because of its engagement with a pin I 84,link I8 rocks lever II8, which shifts collar |48 and its with a lockingnose |88 out of lockingengagement with lever 282. A spring 288,one endof which is secured at 284 to the lever |88 and the other i end of whichis suitably connected to the frame, o normally urges lever |88 intolocking engagementl with lever 282.

, Lever 282 is mounted on one end-of a `shaft 288, which is journalledin brackets'288a and 288b suitably secured to frame |58l ofthe indexingmechanism. At the other end of shaft 288 is mounted a lever 281,provided'with cam followers 288 and 288a. Cam follower 288 runs in a'groove 288a in member 288 formed integrally with or suitably attached togear 2|8 which is siidably and rotatably mounted on a fixed shaft 2|4. Aspring 2|| located in a recess 2|2 in frame |58 bears against lever 281Yso that whenever lever 282 is released from locking engagement withlever |88, the spring 2|| forces gear 2|8, which meshes with gear 2I3xed to shaft |11, to slide along shaft 2 I4, each of which shafts makestwo revolutions per cycle of the machine.

Fastened to or formedintegrally with gear 2 I8 is an arm 2|8 providedwith a cam follower 2|1 arranged to engage slots 2 I 8 in a Geneva gear2 8 rotatably mounted on shaft 228 whenever lever 281 isgrocked by shaft288 tov slide' arm 2|8 into engagement with Geneva gear 2|8 whereuponcam follower 2|1 carried by arm 2|8 is positioned to engage one of theslots 2 I 8 in Geneva gear 2|8. As shown, slots 2|8 are spaced 90 apartso that every time the cam follower 2 I1 engages in a slot 2 I8, theGeneva gear will be `indexed th'rough 90. spaced 90 apart about theperiphery of Geneva gear 2|8 and between slots 2|8 are apertures 22|into which lits a projection 222 mounted on a lever 223 pivoted at 224and provided with a cam follower 225 tracking aeam 228 mounted on thehub of arm 2|8. In this manner, after each indexing movement of arm 2|8,projection 222 will be brought into engagement with an aperture 22| i228 is rotatedthrough thereby turning table 'l' through 188. At theconclusion of the indexing operation, a cam 2 I5 mounted on the face ofsoar 2|3 engages cam follower 233s on lever 231 thereby disconnectingcam follower 2|1 from Geneva slot 2|3, whereupon cam follower 223 ridingon cam'223 locks shaft 220 against further rotation because of theengaaement of projection 222 with aperture 22| (see Figures 4 and 8).Also mountedl on shaft 223 and either formed integrally with or'attachedto gear 223 is a gear 233. .Fixed at 180 intervals adjacent theperiphery of gear 230 and onthe face thereof are plates 23| providedwith projections 232. These projections are positioned to engage withcut-out portions or apertures 233 formed in plates 233 nxed to the faceof a gear |33 mounted on hub 233 of table T.

From the above it follows that setter table T. which is mounted on shaft33 supported by slide brackets 31 running in slides 3, will be inposition to be turned on shaft 30 through 180 whenever one of theprojections 232 carried by a gear 230 is in engagement with an aperture233 carried by gear |33 (Figure 4). .s

Setter table T is provided at one end (see Figures 2, 9 and 14) with ahub 233 so that whenever gear |30 is rotated through 180, setter table Talso will rotate a similar amount. In order to lock the table againstpossible rotation until such motion is desired, there has been provideda latch and thrust collar 231 between hub 233 233 is fastened one end ofspring 233, the other end of which is suitably secured to a stationarypart of the machine. Spring 233 maintains cam follower 233 in trackingengagement with cam 233. On the free end of arm 232 there is pro- 10vided a projection 233 arranged to be moved into and out of the path ofa pin 233 mounted on and projecting laterally from lever |13. Thearrangement of this mechanism is such that whenever lever |13 is movingon its return stroke 15 after having been moved outwardly by a pin |33,

if cam follower 230 is running on a high part of cam 233, projection 233will move clear of pin 233, but if cam follower 230 is positioned on alow part of cam 233 then projection 233 will be moved 2o into the pathof pin 233 and hence will lock lever 13 against full return movement.

As shown in Figures 6 and 13, movement of lever |13 is responsible forthe movement and positioning of shiftable member |33, which hasassociated therewith a series of cams |36 to I0|,

inclusive. Movement of lever |13 also shifts disk |31 and the severalcams |3| .to |33, inclusive, which are associated therewith. Therefore,whenever a pin |33 moves lever |10 through a full and one face oi' gear|30; ,this collar is keyed to so stroke, cam |33 will be positioned toengage lever shaft'30 and is provided with openings 233 in which iltnoses 230 formed on latches 230 which are pivotally mounted on shortshafts 23| carried by gear and hub 233. In the present |03, which at theproper time sets into operation the indexing mechanism for the table T.So also, when lever |13 returns the full distance to its starting point,cam |33 will be located for engageembodiment two latches spaced 180apart are 33 ment with lever |03'for a. similar purpose. If,

employed, thereby making it certain that the table will be unlocked forindexing at the proper time. nach latch 1s furnished with a control erm242 and springs2,33 cooperate with tails 233 formed on thelatche's tomaintain noses 230 inlocking engagement with openings 233. An adjustablelink 233 connects lever 233 attached to shafts 23| so that whenever onelatch 230 is moved out of engagement with collar 231, the other alsowill be moved. Mounted on the hub of arm 2|3, adjacent cam 223, is a cam231 positioned to engage the control arms 232 of latches 230 so thatwhenever lever 2I3 moves to drive Geneva gear 2|0, the high portion ofcam 231 engages one of the arms 232 of latches 230 and thereby unlocksgear |30 and hub 233 from collar 231 so that setter table T can beindexed the desired amount, in this case, 180. It will be observed thatgear |30 is so mounted that the setter .table can be raised and loweredand also inverted in proper timed relation to the control mechanism.This arrangement also makes it possible to index the table in onedirection.

Loosely mounted on shaft 233 is a star wheel 233 provided with aplurality of projections 233a positioned in .the path of pins 33 onturret |33 so that during the rotation of the turret, whenever a pin |33projects therefrom, the pin in addition to engaging cam surface |32 oflever |13 will also engage one of the projections 233a and turn starwheel 233 through one step, the magnitude of which depends upon thenumber of projections 233. In the present embodiment there are eightprojections 233a and the star wheel is indexed A fiat spring 231 bearsagainst the periphery of star wheel 233 and. prevents excess movementthereof under the influence of pins |33.

Fixed to wheel 233 is a cam 233 provided with alternate high and lowportions, and so arranged that whenever star wheel 233 is indexed, cam

however, lever |10 is locked intermediate these positions because of theengagement of projections 233 with pin 233, then the table T will beindexed because of the operation of middle cam |31 which 40-is thenpositioned for coaction with lever |03.

Figure 2'1 shows cams |33, |31 and |33 expanded. It will be noted thatcam |33 is provided with four bumps. equidistantly spaced, or 90 apart.and that bumps |331 and |33 operate as one active set, while bumps |333and |33* perform likewise as another set. Cam 33 is the strike controlcam. Cams |33 and |31 are spare control cams. Each' cam is rotatedthrough oneso half a revolution per cycle of the machine. 'I'he moveback to its original or inoperative position,

in which case, cam |33 is positioned to engage lever 33, or in the eventthat cam follower 233 rests on a low portion of cam 233, lever |13 willbe locked in its intermediate position and cam |31 will be located toengage with lever |03.

Assuming that the first ball has been thrown, the machine set intooperation, and all vthe pins have been knocked down and that a strikeresults, pin |33 will be released to engage lever 05 |13 for purposesdescribed above, so that cam |33 will be shifted into position to coactwith lever |03 for indexing the table and setting a new frame of pins onthe alley. If two balls must be thrown and a spare results, either cam|83 or |31 will be engaged with lever |03. If, for instance, .lever|3313 tracking cam |33 and ay strike is made, cam |33 will be moved intoengagement with lever |03 sothat bump on cam. |33 will effect theindexing of the machine to deposit a new set of pim on the alley. andthat in the assaoiv setter into position to receive a new set of pins ewhen the appropriate time arrives. Due to the fact that lever |18 hasbeenmoved by the pin |64, made operative by unlatching of latch |63,star wheel 255 has also been indexed, which means that cam follower 259has moved oil the highA part of cam 258 onto a low part thereofy therebylocking lever |18 in its intermediate position so that cam |81 isshifted for engagement with lever |95. When, a. ball of the next frameis thrown, if a strike results,vthe pin |64 which is selected will shiftcam |88 again into engage"- ment with lever |95 and a highpartof cam 258will be moved for engagement with cam follower 259 which means thatprojection 256 will be moved clear of pin 266 thereby allowing'lever |18to move its full throw, in which event cam |86 will be set forengagement with lever |95. If aftery the throwing of the first ball ofany frame, pins remain standing, lever` |62 cannot be moved intoposition to engage and unlatch pin |64 because solenoid |60 is notenergized, and

hence lever |18 will remain stationary so that either cam |86 or |81, ifit be the one engaging lever |95, will remain coacting with lever |95until another strike is made, whereupon cam |88 will be shifted in themanner described above into the place formerlyoccupied by either the camActing in conjunction with the pin y,control or strike or spare cams,just described above, are

` a plurality of means which are responsible for the proper operation ofthe suction valves, and the setting and resetting units respectively.

Figures 4, 5, 6, 9 and 25, inclusive, show a preferred form of mechanismfor controlling the operation of the suction valves for the pin handlingdevices. Since cams |89, |90 and |9| and connected to member |84, it isevident that whenever cams'fl86, |81 and |88 are shifted back and forthalong shaft |85, these cams alsowill. be moved in a similar manner.`Located to coact with and track these last--named cams |89, |90 and|9|, is a lever 261 fastened to shaft V268 and provided with a camfollower portion 269'which travels upon the periphery of these cams.kLever` 261 is, therefore, rocked by one of these cams,

as selected, in proper timed sequence and is so constructed that it cansimultaneously press against buttons 210, 21| which are mounted adjacentsolenoid |60 (Figures 8, 13 and 32).

Switch 210 operates the pin carrier system 42 to effect the feed ofadditional pins to thepin setters S, and switch 21| operates signalmechanism described further hereinafter. Lever 261 is provided with aprojection 261a which engages both switches simultaneously. Because ofthis arrangement lever 261 can be operated by either cam |89 or |90which forms a partof member |84 slidable on shaft |85. Each cam isprovided with a single bump, trackedby lever 269, either formedintegrally with lever 261 or as a separate lever fixed to shaft 268 sothat as the selectedcam is tracked by lever 269 the switches will beoperatedby lever 261 and the desired op-` erating circuits energized inproper order.

It will be seen, therefore, that cams |89 and |90 are complementary inaction toy cams |86 and |81 and because the bumps of cams |89 and |90are set to operate in advance of the high parts oncams` |86 and |81, the`pirrcarriersystem will always feedpins to the pin setter V.Ell beforethe table P is indexed .to deliver the pins car- .ried by the setterupon the alley in proper playing arrangement.

vDuringthe intervalin which the pin carrier 'systemffeeds pins to thesetter `and the indexing of the' table from pin receiving to pindischarging position, the alley has been swept clear of dea dwood" andthe fallen pins and bali have been shunted to their distributing meansfor return tothe pin magazine and bowler, respectively, by means (notshown) which may bethe same as that described in the co-pendingapplicationjreferred to hereinabove. In a like manner, cams |89, |90 arecomplementary, but due to the fact that cam |9| is a blank there will beno movement of lever 261, and hence whenever a strike is made and 'cam|89 is operative, switches 210 and 21 will not be disturbed, sojthatline 323 is a closed Acircuit due to the fact that switch 210 is closed,as shown in Figure 39, thereby providing for the operation of solenoid|60 and the feed of a set of pins to setters S, as describedhereinbefore.

It follows, therefore, that in the operation of vmy machine differentsequences of operation if all the pins are knocked' down with two ballswhen a spare results. So also a different sequence of operations willfollow'iffall of the pins are not knocked down by the number of balls allowed for each frame of the game. The machine will automaticallydifierentiate, select, set and reset the desired number of `pins so thatthe play of the game mayA continue` automatically I and uninterruptedlyinsofar asthe proper and desired setting of pins isv concerned., j

Figures 20 to,24, inclusive, show ,thel detail constructionof theresetter units U`which have been l `mentioned hereinabove. The lresetterunits are each provided with means for conducting suction, automaticallyregistering the presence or absence of standing pins, and,ftherefor`e',are responsiblefor the movement of pins to the' setters S. Since all ofthe pin resetter units are the same, only one will be described indetail. In the preferred forni cooperating therewith, each lresetterunits has a tubular bracket 300 xedly mounted uponplate 96 in centeredrelation with reference to an opening 96a therein, and in properarrangement with respect to the required position of the pins as set andreset upon the alley, in usual triangular formation or other desiredarrangement. A piston 30| is slidably mounted in the bore 30|a of thebracket, and has associated therewith and ilxed thereto a valve 302provided with a bore 303 having a transverse suction distributing .slot304 in the free end thereof so thatsuction at all times may bedistributed to the pin distributor unit. Suction is conducted frombore-303 through a bore l305 in each resetter unit which` communicateswith the space above the center of apin.. Coiled about the valve 302 isa spring 306 whichbears against the piston and normally tends to urge itupward as shown in Figure 21. 'A suction opening 301 is formed in thebore in order to make it possible for suction to be fed from conduit `9|and hence through the'bores 303 and 305 for gripping pins. In Figure21fthe suction opening 301 is shown aligned with conduit 9| so thatsuction is being conducted causing the respotter to grip a pin.Projecting from the upper face of piston 33| is a rod 333 about which iscoiled a spring 333 bearing against the upper face of the piston andtending to push it downwardly against the pressure of spring 333. Rod333 extends upwardly through opening 3||I in insulating plug 3|| whichis secured in the open end of bracket 330. Mounted on rod 333 areinsulating plugs 3I2 and 3|3 between which is located a conductor disk3|4 held thereon by means of a screw 3|6. Disk 3|4 is adapted to engagespring contacts 3|3 mounted 180 apart on insulating plug 3|| by means ofbolts 3|8 secured to contacts 3|1a of wires 3|1 by means of nuts 3|3. Asshown in Figures 22 and 23, placed substantially 90 apart from contacts3|3 are spring contacts 323 which are ilxed to insulating plugs 3|| bymeans of bolts 32| and nuts 322 which also secure contacts 322a of line323. It will be noted that in Figure 21, disk 3|4 is shown Vas closing acircuit through spring contacts 3|3, while in Figure 22 the disk is showin neutral or "circuit open" position. However, in Figure 20 the disk isshown closing a circuit through contacts 320 and wires 323. A lightcover 30|la is provided for protection against dust and injury to theswitch unit.

In Figure 20 suction from the line 3| has pulled down ypiston 30| sothat opening 301 is cut oi! y from the source of suction and thepressure of valve 302 bearing against disk 324 is suillcient to hold theunit U against lower plate 31 so that it will not slide between supportplates 36 and 31 during the indexing of the table T. From this itfollows that as units U are moved down into engagement with the heads ofstanding pins, as indicated in dot-dash lines in Figure 21, these pinswill be sealed to the table and: lifted oi the alley floor when thetable rises. In Figure 21 a different operation takes place becausesuction opening 301 is aligned with conduit 3|, the suction is conductedthrough bores 301 and 305 to grip a pin for lifting.

Referring to Figures 34 to 38, inclusive,.it will be seen that mountedon frame F by means of bolts 325 are brackets 326 to which is fastenedby means of bolts 321 a switch board`334. This board may be made of anysuitable insulating material, such as Bakelite or the like, or any othersuitable material commonly used for this purpose, and is formed in thegeneral shape of a semi-circle with the several switches 323 mountedthereon by means of bolts and nuts 333 and 33| to which are fastenedwires 323 connected in series to switches 320 mounted on plugs 3| of theresetter units, as described hereinabove.

As shown in' Figures 37 and 38, switches 323 are preferably formed offlat spring material and are mounted for engagement with contacts 332secured by nuts 233 to fixed plate 323 which is rigidly mounted by meansof screws 333 on an arm of bracket 336. 'I'he switchesV 323 may also bearranged in concentric semi-circles and the contacts 332 are likewisearranged in a complementary semi-circular relationship so that, wheneverplate 323 is moved relative to plate 334, switches 320 will make orbreak circuits through the wires 323. Wires 323 are connected tolcontacts 332 by means of nuts 333 (as shown in Figure .38). As shown inFigures 34 and 35, there are two contacts lfor each set of wires 323 sothat there are two switches 323 and two contacts for each set of wiresleading to-each respective pin resetter unit. As described previously,each resetter unit is also provided with spring switch members 3|3 whichare connected to wires 3|1 of the light system. These switches areconnected in parallel through all the pin` resetters and the sets ofleads thereof are connected by means of lnuts 333 in plate 334. Bracket336 is clamped in such a manner by means of bolt 333a to shaft 33 that aplate 334 extends upwardly therefrom. Plate 323 is so mounted withrespect to hub'32 of frame F that switches 323 and 340 engage with thecontacts 332 and 34| on plate 334 whenever the pin resetters are locatedaboveI the alley in position to determine the presence 'or absence ofstanding pins thereon. Consequently, when the table T is indexed andlowered towards the alley, circuits will be made through wires 323 and3|1 because then switches 323 engage contacts 332 and switches 340engage contacts 34|. It will be seen, therefore, that as the. table ismoved upwardly and indexed another 180, the several switches will beopened and the several circuits will be broken.

The leads 323 which are attached to plate 334 extend to plate 343mounted on bracket 336. Plate 343 is made of non-conducting materialhaving several contacts 344 which are engaged by spring switches 345secured to plate 346 by means of bolts 341 and nuts 348. Leads 323 aresimilarly secured to plate 343. Plate 346 is mounted on a bracket 349fixed to frame I. In this manner, despite the fact that carriages 31mount the shaft 39 for vertical movement, nevertheless the electriccircuits can be made and maintained wheneverswitch 345 contacts 344 inlowered position of the pin setter table T.

Referring to Figures 4, 5, 6, 'l and 13, it will be apparent that thereis a direct relationship between the several cams which function tocontrol the machine when a strike or spare is made, or if pins remainstanding on the alley after lthe throwing of the allotted num'ber ofballs, and the suction control means which coact with the suction valvescontrolling the supply of suction to the pin Setters and resetters ofthe pin handling table.

If it be assumed that a set of pins is standing on the bowling alley inplaying arrangement at the vbeginning of a game, then under normalconditions cams |4| and |44 of the cam assembly |41 will be positionedto engage with levers |2| and |2|a `for opening and closing the suctionvalves V1 and V2.'

Referring -to Figures 25, 26, 27 and 28,' which I show diagrammaticallythe approximate shape of the several cams expanded, lever |2|a engagescam |44 While lever |2I -engages cam |4| and at the same time levertracks cam |86 and lever 231 runs on cam |39. When the rst ball isthrown and pins remain standing, the table when lowered will bring theresetter units U into a position proximate the alley in order to testfor standing pins, and since pins are found standing, the several leversand cams retain the relationship describ'ed above. Due to the continuedrotation of the several cams when the respotters engage the standingpins, lever |2| rides on a high portion of cam |44 and suction goes onin order to grip the standing pins so that when the table is lifted, thestanding pins will be picked up in order that deadwood may be removedfrom the alley by the sweep. The suction is maintained on until theytable descends and respotsY the# lifted pins on the alley insubstantially their identical positions whereupon suction goes ofi'because cam lever rides oil the high portion of cam |44 and the pins arereleased.

Since cam, |86 is engaging lever 95 in this particular phase-"`ofoperation -offthe machine, the table indexingqmechanism will remaininoperative during the movement of theltable up and down because ofthelow portion engaged by lever |95. At the same time, suction valvecontrol `lever |2| will have no motionbecause it rides o n the low`portion of cam |4| and hence no suction will be turnedinto thefspottersf With thereturn of the standing pins to the alley in respottedpositions and the elevation of the table with a concurrent rotationofthe several cams through 180, the illst` cycle of thevmachine will havebeen completed and hence itwill be seen that for each ball thrown itwillcause the machine to operate through an' entire cycle." i

If, upon `the throwing of the next |ball of the allowed numb'er ofballs'per frame, pins still remain standing, the table T` travelsdownwardly to the alley and `-finds pins remaining upright thereon. Ifthe game being 'played is a two ball per frame game, the standing pinswill not |be. relifted and respotted. Consequently, lever |2|a rides ona dwell portion of 'cam |44 and no suction can be conducted to therespotting units U so that the pins`will not lbe` lifted. Hence, whenthe table rises the Vsweep will sweep the standing pins and "deadwoodinto the pit. As the table rises, cam |89 engages lever 261 to lset intooperation the mechanism for feeding pins to the setters of the tableandas the table reaches its upward limits, a new set of pins is placedin the setters, whereupon lby means of cam |4| suction is createdinthesetter units S to hold the pins iinnly while the piny transfers 42`retreataand return to their original positions. At the same time suctionis turned on in the respotting units U because of the engagement of thelever I2 la with a high portion ofcam |44 which causes the re.- settersto beV held against lateral movement for support on the table andthereby prevent them from shifting around during the indexing of thetable which is caused by the engagement `of bump 3a of cam |86 withlever |95 in order .to position the pins for delivery on the alley.Therefore, with suction on in b'oth setters and resetters, the tabley Twith the pins Vin the setters S descends to the alley, the pins arelocated thereon. and due to the engagement of lever |2| witha lowportion of nam |4|, suction is cutoff, the pins are freed and remainstanding on the alley when the table rises. Suction, however, remains onin the respotters because the table must rbe again indexed through 180in ordertopresent the setters for another set of pins.Y The suctionremains on until the vtable rises and is indexed by engagement of lever|95 with bump 4afof cam |86 whereupon lever |2|a rides oil the highportion of cam |84 and suction is cut olf thereby closing the secondcycle. Q

Ina sparethe same `operations are carried out exceptthat when the `tableis lowered to test for the presence or absence of ,standing pins afterthe throwing ,of `the. second ball of the allowed number perframe, aspare signal 315 will be energized to apprise the player of the statusof his play. All of the several levers and cams described above operatesimilarly and the machine` is inoperation for two cycles.

At the conclusion of any cycle a new set vof pins is placed on thealleybed and remains standing thereon." The several control levers areplaced in position with cams |4|, |44, |86 and |89, if therefore, whenlthe ilrst ball is or presence of standing pins.

thrown and all'of the pins are knocked down a strike results.

The amval of the'bali in the pit at the end of the alley starts theoperation of the machine and causes the table T- to be lowered toperform its function of testing to determine the absence 'I'he downwardmovement of table T causes switch members 845, 841' to close `(Figures35. and `39).l At this time suction has been created in the severalresetting devices and since nov pins are found standing, the circuit 829is closed because of the closing ofthe several contacts 920 by movementt ofpistons 90| inbrackets 900 (see Figure 20)-, and if desired a strikesignal 311 can be used to inform the player that all pins have beenknocked down by the first ball. The removal of all pins from the alleyby a vsingle ball, causes the energization of solenoid which unlatchesone of the controlpins |64y so that it engages camv surface |82 of lever|18 forcing the lever in a counterclockwise direction (Figure 13) sothat all of the cams |4|, |44, |86 and |89 are shifted out of engagementwith levers |2|, |2|a, |95 and 261 and cams |'43, |46, |88 and |9| taketheir places. Table T is then elevated and because levers |2| and |2|aengage low portion of cams |43 and |46, suction is cut off in both thesetters S and resetters U during the elevation of the suction table topin receiving position. Substantially simultaneously ,with theenergization of solenoid |60 the pin setter control mechanism isactivated to feed a new set of pins to the setters, and when the pinshave been located in the setters S because of the engagement of levers|2| andV |2|a with high portions of cams |48 and |46, the pins aregripped in the setters by suction and the resetters U are held againstlateral shifting during the indexing of the table because of theengagement of lever |95 with bump of cam |88 which switches the pinsfrom receiving to pin delivery position above the alley. The table islowered with suction on in both setters and resetters and after the pinshave been located on the alley, suction is cut off in the setters to'free the pins on the alley because lever |2| rides on to a low portionof cam |43 and closes valve V1. Suction remains on in the resetters.`The table T is elevated to its upper limits, and at that position lever|95 engages bump 2 of cam |88 and indexes the table to its originalposition with the pin setters located for receiving a new set of pins.Then, because of the movement of lever |2 la downwardly, as it travelsoff a high portion of cam |46, suction is cut off in valve V2. Duringthis series of operations, star wheel 255 has that cams |43, |46, |88and |9| are moved out of coaction with control levers 2| |2|a, |95 and281, respectively, and cams |42, |45, |81 and are positioned forengaging these levers instead. This concludes one cycle of the machineand a one-half revolution turn of the several cams described. If onthe'next cyfcle a ballis thrown and another strike results, the liable Twill be lowered causingthe machine

